. A botanical note-book for the use of students of practical botany [microform]. Botany; Plants; Botanique; Plantes. ./.\'.//.))' A>:KAACf:/> .L\/) 'l] I OpF'-jIIK.—Wlii-ii two leaves, one on each side of the stem, ' irisc from each node (Fig. i6). | VVHOP\Er).—When there are several leaves in a circle at each node (I'ig- 26). kind/ Simple.—A leaf in which the blade consists of a single piece (Fig. 24). Compound.—A leaf in which the blade consists of separate pieces, called leaflets. (a) Pinnate, one in which the leaflets are arranged on each side of a midrib (Fig. 27)
. A botanical note-book for the use of students of practical botany [microform]. Botany; Plants; Botanique; Plantes. ./.\'.//.))' A>:KAACf:/> .L\/) 'l] I OpF'-jIIK.—Wlii-ii two leaves, one on each side of the stem, ' irisc from each node (Fig. i6). | VVHOP\Er).—When there are several leaves in a circle at each node (I'ig- 26). kind/ Simple.—A leaf in which the blade consists of a single piece (Fig. 24). Compound.—A leaf in which the blade consists of separate pieces, called leaflets. (a) Pinnate, one in which the leaflets are arranged on each side of a midrib (Fig. 27). ^=; Old pinnate, where there is a leaflet at the end (Fig. 2 7) Abruptly pinnate, when there is not. Twice-pinnate, when the primary division are them- selves pinnate (Fig. 28). Thrice-pinnate, when the secondary division are selves pinnate. Intetirnptedly-pinnate, when large and small leaflets alternate with each other (Fig. 29). (b) Palmate, one in which several leaflets spring from the end of a common petiole (Fig. 30). ^^n describing a compound loaf the number of leaflets jnisent should be indicated by some ai)propriate term, such as tri-foliate, five-foliate, seven foliate, etc. VENATION. Net-veined.—When the veins branch and form a net-work. (a) Pinnate, when there is one central rib {t/ie mid- rib) and lateral branches (Fig 31). (b) Palmak, when there are • '^ver^ ribs of about the same size, radiating from end of the petiole (Fig- 53)- Straioht-veined.—When the veins run nearly parallel from the base to the apex, or from the midrib to the edge (Figs. 32 and 33). OUTLINE. near ihk Middle. (a) Acicular, when very slender, stiff and pointed like a needle (Fig. 34). Ex., Pine. (b) Linear, whm at least four times as long as broad, and ( ' nearly the width from the base to near the apex ig. 35). E^ Grasses. (c) Jblong, whei three or four times as long as broad, a. ' with end^ equally rounded off (Fig. 36). Ex., Milk eed. (d) Chal, when
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Keywords: ., bookcentury1800, booksubjectbotany, booksubjectplants, bookyear18
